$3 Chocolate Milkshakes In App Only. No Limit.
To redeem this offer your order
must include a chocolate milkshake. Once
added to your order each will be priced at $3.
Offer Available Only in the Patty Perks
App. Valid Friday, September 12th, 2025.


It's National Cheeseburger Day, Thursday, September 18th! Enjoy $4 Cheesys When you Use The Patty Perks App To Earn Loyalty.


black pepper seasoned angus beef patty,
Swiss, applewood smoked bacon, sour
cream horseradish, arugula, tomato,
toasted brioche bun


creamy vanilla ice cream, nellie and joe's® key lime juice, graham cracker crumbles, fluffy whipped cream, lime wheel


September Free Fridays Features a Free Side Fry With Any Burger Purchase Made In-Store. (1) Free Side French Fry with Burger Purchase for each Transaction. Offer Valid Only On Friday, September 5, 12, 19, + 26, 2025. Offer Only Available at Participating Locations.


rich peanut butter flavor combines
with soft chewy centers + crispy edges
to give these cookies the perfect balance
of salty + sweet. For a limited time only.


100 Bonus Points on your entire purchase made with your
patty perks loyalty account on the 21st of Every Month!


Every Wednesday get a cheesy and fries combo meal special!


Order online or in the B21 app for Burger 21 delivery!


Download the patty Perks app To Earn Rewards



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